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Arsenic Test in Water
Arsenic Test in Water with blue colour appearance.
Arsenic Test in water full kit available with us. Test for Arsenic in water kit manufacturer and supplier in Mumbai, Gandhidham, Chennai, Visakhapatnam, Kolkata, Fujairah, Dubai.
Procedure:
. Preparing 20 ml of saturated solution of sodium bicarbonate with the sample solution.
. 2.5 ml of the above solution was taken in a test tube with a calibrated Pasteur pipette.
. Adding 1 drop of starch indicator to the tube and stir well.
. Adding KI + I2 solution drop wise with another pipette till a blue colour of the solution appears.
. Count the number of drops of KI + I2 solution used.
Calculation:
Volume of KI + I2 solution = no. of drops x value of pipette= V1 Normality of KI + I2 solution = N1
Volume of water = 2.5 mL = V2
Amount of arsenic (mg/L) = V1 x N1 x 37.5 x 1000/V2
Result: The amount of arsenic in water is ________ mg/L.
Note: The iodine solution may change in strength if it is not used for a long time.
Just add two crystals of solid iodine just before use. ( This test can detect upto 5 x 10-6 ppm of arsenic)
Reagents: Solid sodium bicarbonate, 0.00025N KI+I2 solution, Starch indicator